FR2422307A1 - Perfectionnements aux installations de surveillance comportant des cameras de television - Google Patents

Perfectionnements aux installations de surveillance comportant des cameras de television

Info

Publication number
FR2422307A1
FR2422307A1 FR7810118A FR7810118A FR2422307A1 FR 2422307 A1 FR2422307 A1 FR 2422307A1 FR 7810118 A FR7810118 A FR 7810118A FR 7810118 A FR7810118 A FR 7810118A FR 2422307 A1 FR2422307 A1 FR 2422307A1
Authority
FR
France
Prior art keywords
control centre
surveillance system
cameras
transmission frequencies
same cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7810118A
Other languages
English (en)
Other versions
FR2422307B1 (fr
Inventor
Michel Salaun
Jean-Claude Sart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe des Telephones Ericsson SA
Original Assignee
Societe des Telephones Ericsson SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Societe des Telephones Ericsson SA filed Critical Societe des Telephones Ericsson SA
Priority to FR7810118A priority Critical patent/FR2422307A1/fr
Publication of FR2422307A1 publication Critical patent/FR2422307A1/fr
Application granted granted Critical
Publication of FR2422307B1 publication Critical patent/FR2422307B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

Installation de télésurveillance comportant n caméras de télévision 12 reliées chacune par un bloc d'émission 13 à un câble de transmission unique 10 aboutissant à un poste de contrôle 28. Le poste 28 comporte m moniteurs 29 reliés chacun au câble par. un démodulateur 30 fonctionnant sur une fréquence d'entrée différente de celle des autres. On peut télecommander chaque bloc d'émission 13 depuis le poste de commande et sélectionner la fréquence de sortie de l'un quelconque des blocs d'émission parmi les m fréquences d'entrée des démodulateurs 30. Application à la surveillance des axes routiers.
FR7810118A 1978-04-05 1978-04-05 Perfectionnements aux installations de surveillance comportant des cameras de television Granted FR2422307A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7810118A FR2422307A1 (fr) 1978-04-05 1978-04-05 Perfectionnements aux installations de surveillance comportant des cameras de television

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7810118A FR2422307A1 (fr) 1978-04-05 1978-04-05 Perfectionnements aux installations de surveillance comportant des cameras de television

Publications (2)

Publication Number Publication Date
FR2422307A1 true FR2422307A1 (fr) 1979-11-02
FR2422307B1 FR2422307B1 (fr) 1982-04-23

Family

ID=9206724

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7810118A Granted FR2422307A1 (fr) 1978-04-05 1978-04-05 Perfectionnements aux installations de surveillance comportant des cameras de television

Country Status (1)

Country Link
FR (1) FR2422307A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0529317A1 (fr) * 1991-08-22 1993-03-03 Sensormatic Electronics Corporation Système de surveillance vidéo à caméra maître commandant des caméras esclaves

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1444166A (fr) * 1965-05-19 1966-07-01 Compteurs Comp D Dispositif de télécommande
GB1249166A (en) * 1969-06-04 1971-10-06 Electronic Components Ltd Improvements in closed circuit television systems

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1444166A (fr) * 1965-05-19 1966-07-01 Compteurs Comp D Dispositif de télécommande
GB1249166A (en) * 1969-06-04 1971-10-06 Electronic Components Ltd Improvements in closed circuit television systems

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/76 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0529317A1 (fr) * 1991-08-22 1993-03-03 Sensormatic Electronics Corporation Système de surveillance vidéo à caméra maître commandant des caméras esclaves

Also Published As

Publication number Publication date
FR2422307B1 (fr) 1982-04-23

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Legal Events

Date Code Title Description
ST Notification of lapse